bug#43383: 26.3; `toggle-menu-bar-mode-from-frame'

[Drew Adams]

> > What is this command - what's its use case?
> 
> If you set the menu-bar-lines parameter of a frame to zero, but don't
> turn off menu-bar-mode, the menu bar will not be displayed.  In that
> situation, "M-x menu-bar-mode RET" will do the exact opposite of what
> you want, whereas this command, when invoked from the menu popped up
> by C-mouse-3, will do what you expect.  That's the use case.

Thanks for the explanation.

So its use is only when the menu-bar is not
shown.  The doc string should probably at least
point that out.

And perhaps it can be shown only by C-mouse-3,
and only when the menu-bar is not shown (in
the clicked frame).

And maybe use the command I mentioned instead,
either from the keyboard or from C-mouse-3.
Or when the menu-bar is shown, from there too.
It just toggles the menu-bar for the selected
frame (or the FRAME arg).